34 citations · 44 across the 8 of their papers we have counts for
9 papers
Universal relations for hybrid stars and their quark cores: a systematic scan of the quark-matter parameter space
J. P. Carlomagno, G. A. Contrera, A. G. Grunfeld +1
Universal, equation-of-state (EOS) insensitive relations among the global properties of compact stars are well established for hadronic neutron stars and for self-bound strange sta…
Systematic study of the morphology and length of slow stable hybrid star branches
Mauro Mariani, Milva G. Orsaria, Germán Lugones +1
We introduce and systematically study the length of the slow stable hybrid star branch as a quantitative measure of the extended stability region that arises in hybrid neutron star…
The Delta-isobar masquerade: intrahadronic phase transitions and their quark-mimicking signatures in neutron stars
Martin O. Canullan-Pascual, Germán Lugones, Ignacio F. Ranea-Sandoval +1
We investigate the conditions under which isobars trigger a first-order phase transition within purely hadronic neutron-star matter, using the SW4L relativistic mean-fiel…
Towards a unified hadron-quark equation of state for neutron stars within the relativistic mean-field model
Marcos O. Celi, Mauro Mariani, Milva G. Orsaria +2
The equation of state of dense matter remains a central challenge in astrophysics and high-energy physics, particularly at supra-nuclear densities where exotic degrees of freedom l…
Self-bound quark stars with a first-order two-to-three flavor phase transition
G. Teruya, G. Lugones, A. G. Grunfeld
We investigate self-bound quark stars in a flavor-dependent quark-mass density-dependent model with an excluded-volume correction. We chart the parameter space at zero pressure to…
Sub-GeV dark matter in neutron stars: halo morphologies and their suppression by vacuum-like pressure
Loreany F. Araújo, Germán Lugones, José Ademir S. Lima
We investigate neutron stars that contain a unified dark sector composed of cold, degenerate fermionic dark matter and a vacuum-like dark-energy component. Within a general-relativ…
Scaling and universality in strange quark stars
G. Lugones, A. G. Grunfeld
We derive scaling laws that connect certain macroscopic observables of strange quark stars with key microscopic properties of self-bound quark matter, such as the energy per baryon…
Excluded volume effects in the quark-mass density-dependent model: implications for the equation of state and compact star structure
G. Lugones, A. G. Grunfeld
We present a significant extension of the quark mass density-dependent model (QMDDM), initially revised in our prior study (Lugones and Grunfeld, Phys. Rev. D 107, 043025 (2023)),…
Critical spectrum of fluctuations for deconfinement at proto-neutron star cores
G. Lugones, A. G. Grunfeld
We study the deconfinement of hadronic matter into quark matter in a protoneutron star focusing on the effects of the finite size on the formation of just-deconfined color supercon…